A friend of mine bought an unfired .56 renegade and asked me to help him sight it in.The first 2 shots were in the same hole at 25 yards,the 3rd was 6 inches high.He shot 20 times with good accuracy most of the time,but 5 flyers.We picked up the patches and 15 of them looked almost new,5 were shreded.What could cause this.I assume the shreded patches were the flyers.